She totally did it for publicity.
Hate to say it but us "old heads" are not what's poppin in 2010, lol...meaning neo-soul singers like Erykah, Jill Scott, Ledesi,etc. are not going to sell squat, not even in ringtones because HOE SHIT is running rampant.
The Nicki Minajs, Lady Gagas and Rhiannas are now whats up. They prance around scantily clad in garter belts and stillettos and these folks go crazy over them, buying everything they make. It's no longer about talent, but how wild you dress and how much silicone you put in your asscheeks.
Geesh, I remember MY FATHER saying the exact same thing about "our" music (NWA, GUY, SILK) growing up, lol. That "yall dont know nothing about good music!" LOL.
BTW, Erykah's booty is REAL, lol!